[jayd16]

> unless you have Google's size microservices and infrastructure

The protobuf stuff can start to pay off as early as when you have two or more languages in the project.

[treis]

Don't you get the same benefit by writing a Swagger spec?

[jayd16]

Possibly. I don't usually find restful api gen to be quite as seamless. Value judgements aside, yes, you _could_ generate from swagger but with gRPC its built in and consistent.